Adjustable magnifier



Oct. 16 1923.

c. s. STONE ADJUSTABLE MAGNIFIER Filed oct. s. 1921 Patented @et l5, 1923.

" tease CHARLES S. STONE, OF BREMERTON, WASHINGTON-,ASS-IGNOR O F ONE-HALF TQ .enana ,GRASSIB 0F SEATTLE, WASHINGTON.

ADJUSTABLE maenrrrna. l

.application mea october s, 1921. serial no. 506,509.

fo all whom it rita concern:l

Be it "known that CHARLES S. STQNE, al citizen of the United States, residing'at Bremerton, in `fthe county Aof Kitsap and `State fWashington, have invented -a cer-- tain new and useful. Improvement in Adjustable Magnifiers, of which the following is a specification.

My invention relates to improvements in adjustable magnifiers and the object of my invention is to provide an adjustable magnifier adapted for use with saw filing de- `vices, `whereby the teeth of the saw to be filed are magnified or enlarged, thus reliev-y ing or minimizing the eye strain ordinarily suered by the saw filer.

Another object is to provide an adj ustable magnifier adapted for use with and to bey attached to any of the well known types of saw clamps. l

A further object .is to provide an adjustable magnifier embodying novel meansv adapted to permit the longitudinal and radial adjustment of the magnifying element of saidmagnifler with respect to the base or support thereof, as well as the` saw to be worked upon. i

A still further object is' to provide an `adjustable magnifier embodying novel means adapted to permit of the lateral adjustment of the magnifying element of saidl magnifier with respect to the base thereofzai to thereby aligner centr-alize '.said element with respect to the teeth of the saw to be worked upon, as well as to permit of said magnifying element being swung upwardly away from said teeth or cutting edge of said saw to a vertical inoperative position, to thus permit of fthe ready removal, replacement or adjustment ofksaid` saw within its associated clamp.`

A still further object is to provide an adjustable magnifier embodying novel means adapted to permit of the angular'adjustment ofthe magnifying element of said magnifier with respect to a-normal horizontalplane or the plane of the teeth of thesaw to be A worked upon.

A still lfurther object is to provide-ans adjustable magnifier embodying simplicity;

. durability and economy in construction that is` .positive and Yefficient in operation, that is neat and ornamental in appearance and. that will not readily get out of order.

whichwill appear as the description proceeds, my invent-ion'resides in the novel construction, combination, adaptation and arrangement lof and claimed.

l accomplish these objects by devices illustrated in the accompanying drawings,

wherein- Figure l is atop plan view of an adjustable' magnifier embodying the features and principles ofy my invention and illustrating the .same in its relative operative position with respect to the saw tobe led, which saw with afragmentary portion .of its associated cl'ampis shown in dotted lines;

'Figf 2 is a view in .side elevation of the same in a similar operative position;

Fig. 3 is a view in end elevation of my'4 adjustable magnifier as it `wlould appear when operatively secured to a saw clamp of any well known form and illustrating the same in' an adjusted radial position with respect to its base member in dot and dash lines, alsoillustrating the magnifying element in several. adjusted angular posltions with respectwto a horizontal plane in' dotted and dash lines; and

parts hereinafter described l Fig. 4 is a fragmentary View" in side elevation ofmy device illustrating the magnifying element in anv inoperative or radially associatedA `iongitudinally adjustable -member, parts being shown in section.y

Referring to theldraw-ings, throughout @5. `adjusted vertical position with'respect toits which like reference numerals designate like 90^ parts, the numeral 10 designates my adjustable magnifier, 11 desi ateswthe saw to be worked upon a1.d"`12 rt e clamps to operatively secure the4 saw in a well known manner during the filing operation.

` My adjustable magnifier 10 comprises a base or anchoring member 15, a longitudinally and radially 'adjustable supporting member 16, a laterally and radially adjust l able memberl 17 and 4the angularly adjust- 100 able magnifying glass or element 18.

The base" or anchoring .member .15 is formed substantially inV the tubular shape shown and is providedupon one side thereof with .outwardly projecting spaced and 10 perforated lugs `19 which serve to secure or anchorvsaid memberin anysuitableor se-V v lected position. The longitudinally and radially adjust-4 With the above and other objects in view Iable isupporting member 16 v'comprises a l 0 lowerhorizontally disposed portion. or leg 20, an upwardly curved semi-circular portion 21, and an upper horizontally disposed portion 22.

' #The lower vhorizontally disposed portion 22 is of relatively short length in comparison to the length of the portion' 2O and is adapted to terminate in a tubular T member' 23, which T member is` adapted to be secured upon the terminal or end of the portion 22 in any well known manner.

The longitudinally and radially adjustable member 16 is adapted to be normally secured against longitudinal or radial movement within the base member ,15 by a clamping thumb screw 24, vwhich thumb screw is adapted to be threadably engaged ywithin a boss 25 formed upon the periphery of said member 1 5 substantially midway of the length thereof.

The laterally and radially adjustable member -17 is adapted to vbe concentri'cally disposed for longitudinal and radial adjustment within the `T member 23, said member 17 being normally disposed in perpendicular relation. with respect to the portion 22 of the member 16, as shown`more clearly in Fig. 1.

The member 17 is adapted to be normally clamped in any selected or desired adjusted position within the T member `23 by a clamping thumb screw `26, which thumb screw is adapted to bel threadably engaged .within a boss 27 formed upon said T member 23 at the juncture of the branchv portions thereof.

The angularly adjustable magnifying glass or element 18 may be of any well known type orform and is provided with a handle 28,V which handle is adapted tovbey coricentrically vdisposed at its-outer end for radialA orl` circumferential adjustment' Within a perpendicularly' disposed tubular portion 29 vformed integrally upon' the forward end ofthe member 17, said radial or circumferential adjustment of the handle-28 'n within the'portion29 permitting of the angular adjustment of said magnifying rglass with respect toa normal horizontal plane o r the normal plane of the saw to be worked upon, as will be readily apparent and obvious by referring to the several views of the drawings.`

The outer end of the handle 2.8 is adapted to be normally clamped in any selected y'and desired adjusted position .within the portion 29 by a clamping thumb screw 30, which thumb screw is adapted to be threadably engaged within a boss 31 formed upon said portion midway of the length thereof. In F ig. 3 I have illustrated the saw clamp 12 in full lines which clamp may be of any well known or desired form and is adapted to clamp or secure the Saw 11 in operative position therein in a well kno'wn manner.

The vsaw clamp 12 comprises complemental saw ,clamping jaws 32 and 33 respectively, said jaw 33 being pivotallyl secured c or mounted, as at 34, upon the jaw 32.

The jaw 33 is also` adapted to be adjusted to and from its associated jaw 32, as by an adjusting screw 35.

o ixedly secure or clamp the saw clamp 12 in van operative position upon agwork spaced parallel jaws 37 and 38 respectively,

which jaws are adapted to normally receive therebetween the forward edge of said work bench 36, and are further adapted to be fixedly secured thereon by aclamping screw 39, which screw is adapte/d to be threadably disposed within the lower jaw 38 .and to engage the underside of the work bench A36, as shown in Fig. 3. f

Theadjustable magnifier 10 is adapted to be secured in operative position upon the saw clamp 12 by ixedly securing the base member 15 of said magnifier 10 to the upper side of the upper jaw 37 of said clamp 12 adjacent the outer end thereof, as by cap y screws 40.

To expedite and facilitate the'positlioning or removing of the saw 11 within and from the saw clamp 12 the adjustable, magnifier 10 may be swung backwardly and downwardly, as shown in dot and dash lines in Fig. 3, to thus leave said saw clamp entirely clear while performing said positioning'or removing operation, as will bereadily apparent.

However, if .desired the magnifying glass or element 18 may beswung upwardly to a substantially vertical inoperative position, as shown in full lines in Fig. 4, to also permit of the proper positioningor removing of the saw 11 within and from the saw clamp 12, or 'forf any other desired reason or pur- 'to be productive mum results and to embody the maximum.

which it is designed.

It will be apparent by referring to the' drawings and from the foregoingdesciziption' principles of my invention ofthe desired and maxithe features andl utility inasmuch as such a device venient and simple to use, indispensable in work of is very conand is practically the character for that the length of `the portion of the inember 16 will permit of considerable lon itudinal adjustment of the. magnifying e ement 18 Without disturbing-the saw l1 within its associated clamp operation, and it will the member 17 will readily. permit of the 4aligning or centralizing of the magnifying element 18 with respectfto the teeth of the saw 13..

ings, the advantages of the construction and,

From theC foregoing description taken in connection with the accompanying 'drawo; the method of operation of my adjustable magniierwill be readily apparent to those skilled in the art. to which my invention pertains to thus enable those `so skilled to construct and operate the same, but, while E have shown-and described theconstruction l2, during the sawfiling also `be apparent that .magnifier shown is merely illustrative and that such changes-may be made when desired as are Within thelscope of my invention and embodied in the accompanying claim; x'

What l claim is:l

A device 0f the class described comprising a base, clampingmeans mountedupon said base, a U shaped supporting member adapted to be clamped in a radial and longitudinal position within said base, a tubular T member having clamping means'mounted thereon that is adapted to clamp said U shaped member for radial and longitudinal movement of said member, a straight memmagnifying element adjustably disposed for angular movement upon one end of said straight member, and clamping means for said magnifyingr element.

1n witness whereof, I hereunto subscribe my name this 3rd day of October L D. 1921. CHARLES S, STONE. 

